GNU bug report logs - #23574
24.5; Overzealous underlining in emacs-nox

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Colin Woodbury <cwoodbury <at> azavea.com>
Cc: 23574 <at> debbugs.gnu.org, rudalics <at> gmx.at, john.b.mastro <at> gmail.com, npostavs <at> users.sourceforge.net
Subject: bug#23574: 24.5; Overzealous underlining in emacs-nox
Date: Mon, 06 Jun 2016 22:18:33 +0300

> From: Colin Woodbury <cwoodbury <at> azavea.com>
> Date: Mon, 6 Jun 2016 11:25:34 -0700
> Cc: Eli Zaretskii <eliz <at> gnu.org>, Noam Postavsky <npostavs <at> users.sourceforge.net>, 23574 <at> debbugs.gnu.org, 
> 	John Mastro <john.b.mastro <at> gmail.com>
> 
> If your statement that uses an implicit happens to span multiple lines, ensime (I believe) just finds the starting
> and ending points of the statement and applies the face to the entire area. In the GUI, this happens to produce
> the desired effect of only underlining where characters are (with the newline as well, as mentioned
> previously).

Once again, there _is_ no newline.  It is not displayed.  What you see
is an empty character cell produced for displaying the cursor.  It has
no direct relation to the newline.

And I don't think what you get is the desired effect, you just get a
side effect of a particular implementation detail.  E.g., what happens
if a line fits exactly on a line, i.e. the cursor at its end will be
displayed on the fringe?

> In TTY this places the face over everything, which we don't agree is a bug or not.

It isn't a bug, because that's how the display engine was coded to
work.  Of course, we can make it behave differently if we want.

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